Method Bind

Source/Engine/Graphics/Materials/ParticleMaterialShader.cpp:46–174

}

void ParticleMaterialShader::Bind(BindParameters& params)
{
    // Prepare
    auto context = params.GPUContext;
    auto& view = params.RenderContext.View;
    auto& drawCall = *params.DrawCall;
    Span<byte> cb(_cbData.Get(), _cbData.Count());
    ASSERT_LOW_LAYER(cb.Length() >= sizeof(ParticleMaterialShaderData));
    auto materialData = reinterpret_cast<ParticleMaterialShaderData*>(cb.Get());
    cb = cb.Slice(sizeof(ParticleMaterialShaderData));
    int32 srv = 2;

    // Setup features
    if (EnumHasAnyFlags(_info.FeaturesFlags, MaterialFeaturesFlags::GlobalIllumination))
        GlobalIlluminationFeature::Bind(params, cb, srv);
    ForwardShadingFeature::Bind(params, cb, srv);

    // Setup parameters
    MaterialParameter::BindMeta bindMeta;
    bindMeta.Context = context;
    bindMeta.Constants = cb;
    bindMeta.Input = nullptr;
    bindMeta.Buffers = params.RenderContext.Buffers;
    bindMeta.CanSampleDepth = GPUDevice::Instance->Limits.HasReadOnlyDepth;
    bindMeta.CanSampleGBuffer = true;
    MaterialParams::Bind(params.ParamsLink, bindMeta);

    // Setup particles data
    context->BindSR(0, drawCall.Particle.Particles->GPU.Buffer->View());
    context->BindSR(1, drawCall.Particle.Particles->GPU.SortedIndices ? drawCall.Particle.Particles->GPU.SortedIndices->View() : nullptr);

    // Setup particles attributes binding info
    {
        const auto& p = *params.ParamsLink->This;
        for (int32 i = 0; i < p.Count(); i++)
        {
            const auto& param = p.At(i);
            if (param.GetParameterType() == MaterialParameterType::Integer && param.GetName().StartsWith(TEXT("Particle.")))
            {
                const StringView name(param.GetName().Get() + 9, param.GetName().Length() - 9);
                const int32 offset = drawCall.Particle.Particles->Layout->FindAttributeOffset(name);
                ASSERT_LOW_LAYER(bindMeta.Constants.Get() && bindMeta.Constants.Length() >= (int32)(param.GetBindOffset() + sizeof(int32)));
                *((int32*)(bindMeta.Constants.Get() + param.GetBindOffset())) = offset;
            }
        }
    }

    // Setup material constants
    {
        static StringView ParticlePosition(TEXT("Position"));
        static StringView ParticleSpriteSize(TEXT("SpriteSize"));
        static StringView ParticleSpriteFacingMode(TEXT("SpriteFacingMode"));
        static StringView ParticleSpriteFacingVector(TEXT("SpriteFacingVector"));
        static StringView ParticleVelocityOffset(TEXT("Velocity"));
        static StringView ParticleRotationOffset(TEXT("Rotation"));
        static StringView ParticleScaleOffset(TEXT("Scale"));
        static StringView ParticleModelFacingModeOffset(TEXT("ModelFacingMode"));